Electrical induction apparatus



NOV. 3, 1942. w R 2,3002536 r ELECTRICAL INDUCTION APPARATUS Filed July12, 1940 2 Sheets-Sheet 1 /8 m m f t /4 I4 I! w /e wnuesszs: INVENTOR k7- I Wi/h'amL. Curry.

\ I W. 6 M 771W ,6) ATTORNEY Nov. 3, 1942'. w, L, URRY- 2,300,536

ELECTRICAL INDUCTION APPARATUS ATTORNEY Patented Nov. 55, 1942ELECTRICAL INDUCTION APPARATUS William L. Curry, Sharpsville, Pa.,assignor to Westinghouse Electric & Manufacturing Com pany, EastPittsburgh, Pa., a corporation of Pennsylvania Application July 12,1940, Serial No. 345,043

3 Claims.

- My invention relates to electrical induction apparatus, and moreparticularly to means for Cantering the apparatus in the tank andretaining it therein against vibration.

It is an object of the invention to provide means for centeringelectrical induction apparatus such as transformers in the enclosingcasings or tanks in which they operate, and in retaining the apparatustherein, that is simple in construction, inexpensive to manufacture andefficient in use.

More specifically, it is an object of the invention to provide channelmembers within the transformer tank and attached to the walls thereofhaving flange portions extending inwardly from the wall and cooperatingwith guiding surfaces on the apparatus for guiding and positioning theapparatus while it is being lowered into the tank, and providingprojections at the upper end of the channel members that are bendableand positioned at such elevation as to engage cooperating membersprovided on the apparatus, so as to tightly retain the apparatus againstmovement.

Other objects and advantages of the invention will be apparent from thefollowing description of a preferred embodiment of the invention,reference being had to the accompanying drawings, in which:

Figure 1 is a plan view of a transformer positioned within a casingprovided with the guiding and retaining means of the invention, showingthe casing wall in section;

Fig. 2 is a perspective view of a guiding and retaining member;

Fig. 3 is a vertical sectional view taken along the line III--III ofFig. 1; and

Fig. 4 is a detail view of a modified structure.

The apparatus to be retained within the casing may be a transformerhaving a core and end frame comprising four members attached to theedges of the stack of laminated sheet steel com.- prising the core ofthe magnetic circuit as described and claimed in the copendingapplication of A. D. Forbes for Electrical apparatus, Serial No.345,081, filed July 12, 1940, and assigned to the same assignee as thisapplication.

Referring to the drawings, a circular tank I is illustrated containing atransformer or like apparatus having a core 2 of magnetic materialprovided with a pair of windows 3 for accommodating windings 4, 5 and Bthat are positioned about the winding leg of the core structure betweenthe windows. An end frame structure is shown about the edges of thestack of laminations comprising the core structure 2 and consisting of abottom member I, two vertical side members 8 and 9 on opposite edges ofthe stack of laminated steel sheets and a top member II, the fourmembers 1, 8, 9 and II being connected together to form an end frameabout the core.

The side end frame members 8 and 9 are shown in Fig. 1 and are providedwith channel-shaped portions I2 that xtend vertically between the flatportions I3 that are positioned snugly against the edges of the corestructure, thus providing a vertical rib or corrugation on oppositesides of the core structure adjacent the tank wall. Guide channel-shapedmembers I4 are positioned within the transformer tank wall and weldedthereto as shown at I5 in Fig. 1, the side flanges I 5 of the channelextending inwardly from the tank on opposite sides of the channelshapedportions I2 of the end frame side members B and 9 so that the memberscooperate to center the transformer structure within the tank while itis being lowered into place.

The channel guide members I4 are so positioned within the tank that thetop edge I8 thereof is substantially at the elevation of the upper edgeIQ of the channel-shaped portion I2 of the side frame members 8 and 9when the transformer is in its final position in the tank. As best shownin Fig. 2, a projection 2I is provided at the upper end of the channelguide members I4 which extends upwardly, in the manner shown in thatfigure, until after the transformer has been positioned within the tank,after which the projection or car 2| is bent over at substantially rightangles from its initial position so that it extends substantiallyhorizontally inwardly from the outer wall of the tank as shown in Figs.1 and 3, and thus snugly engages the upper end I9 of the end framechannel-shaped portion I2. This projection may, if desired, be ofsufiicient length to give the end portion thereof a second right anglebend so that it extends downwardly a short distance on the inner side ofthe frame in Fig. 4. It will be appreciated that after the transformercore and coil structure has been lowered into position with the sidewalls I6 of the channel members I4 cooperating with the vertical ribportions I2 of the end frames to guide the transformer centrally of thetank, these side walls It plus the bent over ears 2I at the upper endsof the members I4 retain the structure tightly within the tank againstappreciable vibration or movement.

It will be apparent to those skilled in the art members 8 and 9, asshown that modifications of the structure shown and described may bewithin the spirit of my invention and I do not wish to be limitedotherwise than by the scope of the appended claims.

I claim as my invention:

1. In combination, a casing for containing electrical apparatusincluding a core structure and an end frame therefor, guide meanscomprising channel members fastened within the casing having flangesextending inwardly from the casing wall, said apparatus havingcooperating surfaces for engaging said channel members to guide saidapparatus centrally of the easing while being lowered to its finalposition within the casing, said channel members having upwardlyextending ears thereon bendable at right angles from the wall andpositioned at such elevations with respect to the apparatus that whenbent inwardly after the apparatus is in place within the casing theapparatus is held tightly thereby.

2. In combination, a casing for containing elec trical apparatusincluding a core structure and an end .frame therefor, said end framehaving outwardly pressed channel sections providing ribs on oppositesides thereof, guide means comprising channel members fastened withinthe casing and having flanges extending inwardly from the casing wallfor engaging the ribs on the end frame to guide and center saidapparatus within the casing while being lowered to its final positionwithin the casing, said channel members having upwardly extending earsthereon bendable inwardly at substantial angles from the wall andpositioned at such elevations with respect to the apparatus that whenbent inwardly after the apparatus is in place within the casing theapparatus is held tightly thereby.

3. In combination, a casing for containing electrical apparatusincluding a core structure and an end frame therefor, said end framehaving chanel portions providing ribs extending vertically on oppositesides thereof, guide means within the casing for engaging the ribs onthe end frame to guide and center said apparatus centrally of the casingwhile it is being lowered to its final position within the casing, saidchannel members having upwardly extending ears thereon bendable inwardlyfrom the wall and positioned at such elevations with respect to theapparatus that when bent inwardly after the apparatus is in place withinthe casing, they engage cooperating members provided on the apparatus,whereby the apparatus is held tightly thereby.

WILLIAM L. CURRY.

